CH27234A - Speaking aids for telephone calls - Google Patents

Speaking aids for telephone calls

Info

Publication number
CH27234A
CH27234A CH27234A CH27234DA CH27234A CH 27234 A CH27234 A CH 27234A CH 27234 A CH27234 A CH 27234A CH 27234D A CH27234D A CH 27234DA CH 27234 A CH27234 A CH 27234A
Authority
CH
Switzerland
Prior art keywords
speaking
aids
telephone calls
calls
telephone
Prior art date
Application number
CH27234A
Other languages
German (de)
Inventor
August Barth
Gottlieb Ott
Original Assignee
August Barth
Gottlieb Ott
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by August Barth, Gottlieb Ott filed Critical August Barth
Publication of CH27234A publication Critical patent/CH27234A/en

Links

CH27234A 1902-11-07 1902-11-07 Speaking aids for telephone calls CH27234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH27234T 1902-11-07

Publications (1)

Publication Number Publication Date
CH27234A true CH27234A (en) 1903-12-15

Family

ID=4240148

Family Applications (1)

Application Number Title Priority Date Filing Date
CH27234A CH27234A (en) 1902-11-07 1902-11-07 Speaking aids for telephone calls

Country Status (1)

Country Link
CH (1) CH27234A (en)

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